Double-acting-diaphragm rotary gas-meter.



. DE LA MATYR.

DOUBLE ACTING DIAPHRAGM ROTARY GAS METER.

APPLICATION FILED JUNE 3.1916. RENEWED JUNE l3. 191s.

Patented Jul 16 va SHEETS-SHEET 1. 2:

VIII/Ill I.

Inventor v .E'Zz'a: Delailfqiyr Patentad July 16, 1918.

s SHEETS-SHEET 2.

TNE MIRR'S pzrzes ca.Pnom-LI1N0.WASNINmuN. u. c.

E. B. DE LA MATYR.

DOUBLE ACTING DIAPHRAGM ROTARY AS METER.

a APPLICATION FILED JUNE 3. HHS. RENEWED JUNE 13. I918- 1,2??3042.

Patented July 16, 1918.

3 SHEETSSHEET 3.

m: mwms PFYEFIS cn,PND1O LITNONWASNINGWN, o. c.

tnvrrnn s ra rns PATENT QFFICE, v

ELIiAs BLQDE LA 'IVIATYR, or Los ANGELES, CALIFORNIA.

DOUBLE-ACTING-DIAPHRAGM- ROTARY GAS-METER.

Specification of Letters Patent.

Y Patented July 16', 1918.

Application filed J'une3, 1916,"Seria1 1 5,101,626. Renewed June 13, 1918. Serial N 0. 240,072

To all whom it may concern: 7

Be it knoWn that l, V V MATYR, a, citizen of the United States, re-

siding at Los Angeles, in the county ofLos Angelesand State of California, 'have 1nvented a new and useful- Double-Actingv Diaphragm Rotary Gas-Metenioff Which the followingis a specification This invention is an. v the gas meter patented to mefMarch 17,

Objects of the invention are to produce" a gas meter of maximum accuracy; to produce a gas meter that W111 require no adustment; that W111 requlre no flag W1re or any connection to. arbitrarily control one diaphragm by another to provide a meter that W111 operate wah-nnmmu gas pres-.

sure; that is smooth in action, thus avoiding fluctuations of'jpressure at the cool: and I, consequent fiic'keringof lightsythat insu "lates' the measuring elements from the case by' a chamber, o'ffnieas' uredfgas, sothat such condensation as may occurjwill not cause any liquid or other deposits Within the measuring e'lements'ot the vmeter ,to utilize the force of gravity for." directly operating the meter; to secure simplicity ofconstruc tion so that" a Workman having sufficient skill to set a gas'gmeter' "can disassemble and assemble the meter Without likelihoodof impairing its action; to increase the capacit to tWice that'of'the same size' gas meter ofprevious construct1on; to give an accu-' rate measureat any pressure, higher-10W;

o to rovide metallic or other ri id comma,

, v C) a. I

ments that Will be as definite and unchang ing as standard fluid measure; 'todo away With the necessity o f regulation aiterleavmg the factory; to prevent condensation 1n the measures, on tl'1evalve,'oron the (11aphragins; tocollect all condensationin the case outside the measuring drum;fto inva-.

, riably and accurately measure, and index out action of natural gasuponthe fdia phragnirsot'the meter.

that is to say, ffroiii; 'i'e-gister'i all the gas before it haspassed into the case or holder; to avoid the use of any stuffingbox; and to avoid the use ofany gear of meter apable-er automatically oiling the diaphragrnsfthus to counteract the drying An; object fis to prevent "diaphragm shrinkage V n1 algmglthef meter run fast, more gas ELI-AS1137. DEv LAI 1mprovenient over thanis consumed. This is efiected by providing measuring chambers or pans on both sides of each diaphragm and providing means. to stop the diaphragm plate before the diaphragm is fully expanded,'thus al-,

that the space to be filled and emptied on each side of any dlaphragm remains 0011-.

stant irrespective of any stretching or contraction of the diaphragmthat might occur.

In this connection provision is made for cushioning the diaphragm plates to prevent Wearing of the diaphragmand anynoise of contact. 7

An object is 'to increase the life of the dia phragm and to avoid Wearing, stretching, breaking or cracking of the diaphragm. This latter advantage is gained very largely by preventing the occurrence of any condensation inside "the measuring drum and by stopping the diaphragm. by the pan in bothdirections. n

The invention is considered as broadly neW and pioneer in many features, some of Which may beenumer'ated as follows:

A diaphragm mounted between two measuring chambers and oscillating to simultaneously collapse one and expand the other, and vice versa; said chamberobeing provided With me ans for admittingi and emitting gas at the alternate movements 01".- the diaphragm; the arrangement by {Which the Weights on the diaphragms alterfrom the measuring chambers insuch a Way 7 as to alloW gravity acting through the,

Weights to turn a valve member to give 1 effective direction to the m'easuringdrurn; the arrangement of'an unmeasured gas supply chamber and a measured Tgas'supplychamber ith 1 a measuring drum mounted inthe measured gas supply chamber and a' pluralltyof intakes from passage-Ways be,

tween the supply chamber and the 'drum vfor unmeasured gas to enter the drun1', a

the arrangement of ports whereby in one Otherobjects', advantages andifeatures of 1 desirable.

plurality of outlets from passage= ways from the drum, and valve means operable by the rotation of thedrum to connect the passage-ways to and from the measuring chambers alternately with the supply pasagesand the measured gas chamber as the drum. revolves, so that the flow of gas to the drum and the flow of gas from the drum may be constant .to supply any constant demand within the capacity of the meter.

A distinctive and broadly new feature is position ports on opposite sides of one diaphragm simultaneously receive and d1scharge respectively, and inanother positlon simultaneously discharge and receive, re? spectively.

Although thisnew meter is so constructed that the amount passing through the meter at each cycle will be invariable and ispredetermined by the manufacturer, the invention. makes provision of means whereby the of Fig. '1 omitting the cover and the drum.-

capacity of the measuring drum may be increased or diminished for adjusting the amount of gas that will pass through the,

meter at each revolution and at a certain fraction of a revolutlon of the drum.

The accompanying drawings illustrate the invention. I

' Figure 1 is an elevation of a meter con structed in accordance with thls' invention,

the case being shown in vertical section on line 00 ,13 igs. .2, 3 and 5,' in the plane of the axis of the drum. Said drum is shown intact, The outlet pipe is not shown, being cut away by the plane of section. v

Fig. 2 is a broken elevation from the left Fig. 3 is a fragmental elevation from the left of Fig. 1 omitting the cover and all the internal .mechanism, showing the hollow base partly broken away to expose theinlet pipe which is shown in axial section.-

Fig. 4: is a fragmental elevation of, the inlet-end of the rotary drum; looking left from line'w Fig. 1. i

' 5 is a broken plan section of themeter' onirregular line indicated 'at 00 Fig. 2.

.F1g.' 6' is an enlarged section of-the meter 1n a plane at right -anglesto, theaxls of the "drum show ng thep'artsin posltlon'forfill ing'tjwoi and emptying two'measuring chami bers .while the other'chambers are inactive.

Thejfljdiaphragms are shown/as having reached :the overbalancing positions for v turning the meter in theldirection of the A further posi-' feathered, curved arrows,

tion of the drum is indicated in dash lines. Fig. 7 isa View analogous to Fig. 6' showing the drum in a further position.

- Fig. 8 is a fragmental section on line x Fig.6. v p

Fig. 9 is aview on an enlarged sea-1e showing the exit faces of the rotary. valve mem-.

her and the adjustable non-rotary valve" member.

Fig. 10 is an elevation on the scale of Fig. i

9 showing the exit and contact face of the adjustable, non-rotary valve member. 5 The base section a of the case may be made of any suitable material and isshown as made of castmetal. It is providedwith an inlet pipe 1 and inlet chamber 2, and

with a measured gas cavity 3, which is provided with acondensation pumpl'fand an outlet pipe 1, v r I The chamber 2 and the cavity 3 open onwardly from the inlet pipe 1 towardthe outlet pipe 1 and are providedat thei rims with annular seats 2 and 3".

Journal bearing supports 5,6 areyconnected to the baseby any suitable means. The journal-bearing support 5 is shown as a plate that fits gas tight on and is fastened to the annular rim or seat '2 which is formed integral with thelbas'e a1 Said plate 5 carries the drum-spindle bearing '7 and constitutes the exit wall-ofthe'intake cham ber2. Said plate 5 forms a detachable exit partition between the chamber2 and cavity 3. Partition plate 5 is providedwith measured gas orifices'S, 9 around which are providedfcol-lars 10 on the intake ends of which. c annular flexible'leather membranes 11 are applied and connected by suitable means as by bands I). The inner edgesjof said annular membranes 11 are connected by suitable means as bands 6 tointake pipes 12, 12

that projectthrough the plate:5 into the inlet chamber 2 and form exits for un measured gas from sa1d lnlet chamber.

Said pipes 12, 12 are provided at their outer ends with an adjustable non-rotary ing a face plate let that is integral therewith and is provided with outer'a'ndinner sets of ports, there being, a set of'measure filling ports 15, 16 opening inward from pipes 12, 12 and also'asetof measure emptying ports 15, 16.

,valve member 13 integraltherewithand have V 7 7 I 'The outer ports 1?) and'j15 are co equally spaced from the'axls of the bearing 7 and ,thei'nner ports 16, 16 are co -equally distant a less space from saidaxis. The outer t 15, 15" are practically equal sectors diametrically opposite each other and the inner 16, 16 are likewise"practically equal sectors of shorter radius, the inner measure 7 emptying port16'gbeing betweenjthe outer v filling port 15 and the 'axisrof the bearing i',

while the inner filling port 16 is between of the bearing 7.

' The contact face 0 of the plate 14: is/flat to make a gas-tight fit with a rotary valve member 17.

The adjustable :non-rotary valve member 13 is held from rotation by pipes 12, 12 in the orifices 8, 9. Thebearing .7 is tubular and a spring 18 is coiled therearound and acts between the plate 5 and the non-rotary adjustable valve member 1.3 to yieldingly press the same away from the partition plate 5. I

Said spring 18 is preferably made of such length that while capable of moving the valve plate it will not withdraw the pipes 12 and 12 from the support'5. Said pipes 12 and 12" are straight where they pass through the orifices 8, 9 of the partition plate 5, so that said straight portions may be worked freely with a to-and-fro motion through the plate 5. V

The annular membranes 11 fastened to said pipes and to their respective annular bosses permit said to-and-fro motionto occur without allowing gas leakage.

The rotary valve member 17 is fixed on a ported hub member 19 that is provided with a sleeve 20 which is mounted on a spindle 21 that is a straight rod of steel or other suitable material rotatable in'journal bearing 7 of plate 5 and'journal bearing '22 of support 6. Said sleeve 20 and spindle 21 are fixed together by pin 23 that extends through a collar 23 that secures the end brace member 2a of the drum frame in place against a set collar 24: fixed on the sleeve 20 by a set screw 8.

The intake end of the measuring drum is .formed by the rotary valve member 17 and the hub member 19 on which it is fiXe Valve member 17 is provided with a'flat face 25 that fits against the fiat face a of plate 14 of the adj ustablenon-rotary valve member.

These two face plates 25 and14 are ground to fit each other to form a'joint sufficiently gas-tight to resist any pressure to which they'may be subjected in the operation of the meter. 1

The rotary valve plate 17 is provided with oppositely-arranged pairs of ports, there being an outer port 26 and an inner port'27 in each pair, and there being af. {Ieater number ofpairs of rotary valve ports 26., 27 than there are of sets 15,1 6 and 15, 16 of. ports in the adjustable non-rotary valve member. In the construction shown there r i are twice as many pa'irsof rotary valve {ports 26, 27 asthere are sets ofstatlonary valve ports15, 16 and 15, '16. Theonter rotary valve ports26'are'adaptedto respectively" register successively with the outer ports 15, 15 of the non rotary valve member 13 and the inner ports 27 of the rotary the diaphragms.

valve member are adapted to respectively The rotary valve plate 17 is fixed by screws 28 to the ported hub member-19 of the drum. Said ported hub member has outer and inner passages 29, 30, forming continuations of the outer and inner ports 26, 27, respectively.

The drum is provided with'diametrically opposite pairs of pans 31, 32 secured to the hub member 19 and the end member 2a by any suitable means as by sweating, soldering, brazing or electric-welding, or by screwsor other fasteners. These pans may be made of any suitable material and the inner pans 31 are provided with plane faces 33 at one end, said ends being in a common plane and fixed-to the hub member 19. The inner pan of each pair communicates with a passage 30, and the outer pan of each pair communicates with a passage 29. For this purpose ports 31 and 32 are provided in one end of the inner and outer pans, and channel pieces 33 are provided on the outer pans to form a continuation of the outer passages 29 to complete communication with the outer ports 32'.

The pans of each pair are fastened together at their rims 34, 35 between which are interposed the edges of highly flexible independently-acting, circumferentially-dis posed, weighted diaphragms 36, the edges of which are firmly clamped gas-tight between the pans by means of bolts 37. The outer pans are readily removable by simply re moving the bolts, thus giving access to the diaphragms and making them also easily removed. Said diaphragms are provided with metal 'center-plates38, 38 Which constitute weights that are movable toward and from the axis of the drum with the flexing of Each diaphragm and its weight is adapted to oscillate from pan to pan and the'pans and diaphragms of each pair constitute two reciprocal measuring chambers, one of which expands as the other contracts when the diaphragm oscillates, the rotation of the drum being controlled by the shifting of the weighted diaphragms.

The weight plates 38, 38 are padded by leather covers 39 that are adapted to come as the chords of arcsy, fl/ of a common radius and the outerv padded diaphragm plates 38 are adapted to rest fiat against said fiat outer walls at the end ofthe outer movement of the diaphragm, when the diaphragm side walls fit against the side walls ll of said'outer pans.

sidewalls 4-2 of the inner pan leavinga At the close of the inner movement, the inner (haphragm'plates 38' arearranged to contact with the sloping sloping channel 43 free atthe bottom of the inner pan.

It is thus seen that at one position of the drum, one of the inner ports of the drum will communicate with a supply pipe 12 and the other of said inner ports will communicate with the gas outlet 1, while at the time the outer and inner ports which are companions to said inner and outer ports, will communicate with a supply pipe 12 and with the outlet pipe 1 respectively. That is to say, the ports are so arranged that diametrically opposite diaphraigms will operate simultaneously in the same direction so that one will approach the axis While the other recedes from it,- and vice versa.

By reference to Fig. 6 it will be seen that at one possible position of the drum in which upper and lower diaphragms are vertically disposed relative to each other and the other two diaphragms arehorizon- .tally disposed relative to each other, the

upper and lower diaphragms may befully depresse d,so that the outer chamber 0? on the upper side ofthe drum, and the inner chamber 6 of the lower side of the drum will be expanded, while the inner chambere on the upper side and .the outer chamber 61 on the lower side. are entirely deflated; and at thesame time the horizontal chambers f, f, g g are subject to ohangeof formas the gas under pressure from the inlet chamber passes through the meter so long as the outlet is open. In this Fig. 6 theIouter chamber f and theinner chamber are in process of inflation, while the inner chamber and the outer chamber f are'in process of deflation. The gas entering f through the outer port 32 forces the weights or diaphragm,-plates 38 towardjthe left, supplying gas through an inner port 27 which at that time is an out let port discharging through port 16 to the measured gas chamber. At the same time the gas enters chamber g through inner ports. 30, 27 and 16 and forces gas out of the outer chamber 7 through the outer port 32. In this way the weights formed by the plates, are shifted toward the left side of the drum and the center of gravity is shifted to the left ofthe axle of spindle 21, and therefore the drum rotates in the direction of the feathered arrow passing the dot and dash position and approaching the position shown in Fig. 7. By this movement ports are uncovered so as to admit gas to the chamber ef and to supply gas to the chamber {Z asindicated in Ifig. 7

The inflation and deflation are thus continued and the drum continuesrt'o respond to'the change of center of gravity of the drum structure. V

Said; center of gravity may at some portions of the operation come into the vertione side of the drum, and into the spindle 7 bearing 7 on the other side of the drum. A finger 50 fixed to the spindle rotates with the drum to actuate-the propelling mechanism 51 of the registering mechanism .52. The gravity-operated detent 53 pivoted at 54: to the standard 6 ,and limited in movement by the stops 58, 59 prevents any possibility of operating the meter a full turn backward. I V The non-rotating valve member 18 is constructed with broad, port-closing segments 60 for fully covering two pairs of ports26, 27 at a determined position of the drum, and the median line to of the portclosing segments 60 is normal to a median line 4) through the ports 15, 16 on the one side and l5, l6 on the other side ofv the center of the non-rotative valve member. The median line of said two pairs of ports is preferably arranged atan angle of about 20f with the horizon. 4 1

In practical operation there is alawys an open passage from' the supply chamber into at least two measuring chambers of the drum and a corresponding open passage from the measuring chambers of the drum which are diametrically alined therewith.

7 It is a fact in operation that the' open inlet and outlet ports are always absolutely equivalent. The inlet and outlet ports opposite theaxis of rotation are absolutely equivalent, and the volume of gas coming in is absolutely equal to the volume of gas going out. w v 'The valve arrangement is suchlthat the opening of the inlet port of. a receiving measuring chamber and the outlet port to its complementary'chamber occurs simultaneously when a diameter through the axis of the drum and through the center of said complementary chambers is at an angle to leading fromthe oil chamber to the outlet from the unmeasured gas inlet chamber, are

provided to conduct a limited supply of lubricating oil into the "course of the oneach outer chambena screw-threaded stud I .125 flowing gas for the purpose :of'lubricating,

the wallfLQ i f flaflxed at the center, .of the ,plate 63 screwed outwardly through the wall 40,

"there being arscrew driver kerf 65in the .outer end ofthe stud, and a jam nut 66 is mounted upon the outer end of thestud, against the wall so thatthe plate 63 forms an adjustable stop to limit the deflation of the chamber, and by manipulatingthese stops the aggregate volume of gas "discharged to an actionmay be varied. The adjustment is made by loosening the jam nut 66, operatingthe stud to screw it in or out to the-desired extent, then tightening the jam nut. It isunderstood, however, that in common practicethe. parts may be so ac curately constructed that the regulator stop may be omitted.

In this present meter each diaphragm acts independently of the others, gas being admitted and expelled on both sides, alternately forcing the diaphragm out, expelling gas above it, and back, expelling gas below.

This, is the resultof the novel construction in'which eachdiaphragm has a pan or measure on each ofits twoopposite'sldes. Each pan or diaphragm now acts' independently ,of the others This, as must be seen, allows thediaphragm to, shift its weight horizontally, ,or downward, but never directly upward, to express} thegas and therefore the [pressure to .operatethe machine is mininable fact in'the service,-savinggreat exmized, while at thesame' time the capacity ior amount of gas for each revolution, is

doubled. .Stillanother, more-important if possible, advantage of this double pan, is the fact that it makes anexact measure in cubic inches of gas passing at each revolution." It is a metalliemeasure, unchangeable.

The diaphragmsfill the pans or measures, first one side; then" the other, completely emptying each, each revolution of; the drum.

This does away with regulating; the meter, a necessityheretofore existing, to correctrunning fast or slow after. usage for a time. When the meter is once correct itfremains correct until the diaphragms fail. This is regarded as a very important and most valpense heretofore involved in repairs and. readjustment, and in loss of gas either tot-he manufacturer or to. the consumer, according to whetherfthe meter of the old type were to runfast or slow. c

I claimj+ "I w 1. A gasmeterdrumhaving a double acting diaphragm adapted to revolve with the drumand means on oppositesides of the diaphragm to cooperate therewith to constitute two measuring chambers.

2. A gas meter drum having a double acting diaphragm adapted to revolve with the drum and ported pans on opposite sides of the diaphragm to cooperate therewith to constitute two measuring chambers. 31. .A gas m ter drum havinga double act- "ing diaphragm adapted'to revolve with the V drum-andpressed-'sheet metal ported pans with the drum 'and ported pans on opposite sides of the diaphragm to cooperate therewith to'constitute' two measuring chambers.

6. A gas meter-drumhaving-a double acting weighted diaphragm adapted :to revolve with the drum and pressed sheet-metal port'- ed pans on opposite sides of. the diaphragm to cooperate therewith to constitute two measuring chambers;

.;-'.7.'In a gas'meter drum'a doubleiacting diaphragmadapted to" revolve with the drum; ported pans on opposite sides ofthe diaphragm and-cooperating therewith to form two measuring chambers, and means for alternately filling oneiand emptying the gother ofsaid, chambers; and vice versa; 18. Ina gasmeter, a1drum provided with two, ported, pans :having marginal flanges;

and ;;a diaphragm adapted to revolve with the drum, the jdiaphragm having its marginsclampedbetween said marginal flanges and being adapted to oscillate for inflation 'of o'ne of said,- pans anddefiation of th other, and vice versa.

9, In a rotary gas meter,t wo ported pans having marginal flanges a centrally weighted diaphragm having its margins clamped between said -marginal flanges and being adaptedto oscillate for inflation of one of said pans and' deflation of the. other, and vice versa, and means to allow, said pans to turn onan axis responsive to the movement of the weight from the axis. #10. In a gas meter aidrumhaving a port- .ed hub provided on diametrically opposite sides-of its axis. with pairs of ports, there being an outer and inner port-in each pair; ported outer and inner chambers connected to the-hub, there being an outer chamber for each of said outer ports and an inner chamher for each of said inner ports; diaphragms between said inner and outer chambers of each pair respectivel said dia- ,phragms being adapted to osclllate for the inflation and deflation of'the chambers respectively; and means foralternately supplying gas to one and the other of said ports and vice versa; said hub being adapted to rotate on an axis. I

I 11. Ina gas meter adrum havinga ported hub provided on diametrically-opposite sides of its axis with pairs of ports, there being an uter and inner p each pai p rted outer and .iimer chambers, c nnectedto t e hub,- there b inaa uter chamber for each of: a d outer-por s and an inner chamber foneach of said inner. ports diaphragms be- 7 7 ports of said chambers withtlie gas supply and; with -the. ease. for alternate. inflation and deflation of diametrically fiopposite eha1nofi'each pair so" that the pans and dia-.

bers'.

. 13 A gas meter drum eomprisingpai-rs of outer. and; inner." pans; provided with ports for saidpans respectively; dlaphragm means separating. the inner and outer; pans phragins. oil eaeh pairconstitutetwo measuring. chambers, the, inflation ot one chamber efl eeting the deflation of the othergchaln' her. and vice versa, mqveinent of the diaphragm from pan to pan. h f

I "Ml-A: gras ineter drum comprisingouter and inner pans arranged-in pairs, eaeh pan beingiprovided witha 1 i, a diaphragm between the inner and outer pan ofieaeh' pair respectively, said diaphragm being provided with a centrally-arranged;weight and said 7 diaphragm and-fiveigh t being adapted to be eillate from pan to pan for iriflation anddefl ation, of; said: pans alternately and to 5 change the 'center'oflgravity to rotate the drum.

videdwithoppositely-arranged pairs of inner and outer pans provided respectively with ports, weighted 'di'aphragins between the pans of each pair, means to' alternately connect the inner p0rt' 0f-one pair and; the outer port of" its oppositepairwith the gas outer and inher ports of said pairs with the gas outlet. I V

l6. gas meter oomprisinga drum 'pro videdwith o posit ly-arran ed pairs of 'i'n ner" and outer pans provided" r'espeetively with; arts, weighted 'diaphragms between the pails oi? the"respective vpair's, means to alternately connect the inner port offone pair andt'heouterport-ofits opposite pair with theqlras inletand to connectthe comple mentary o'i'iter andin'nerports of said pairs wi ithxthe gas outlet, so that the'opposit'elycondensation within the drum.

arranged diaphragins. will move-simultanedrum and means to cause gasto pass through-the measuring; means and drum a process ofyiineasu-remntso that during-the operation of the meter the measuring drum is surrounded by, measured gas to prevent 18. The combination with a rotary measuring;- drum having pairs e f-outer and inner measuring chambers separated by diaphragms, of: valve meehanism havin -g, a- Stationary valve member provided"- with inlet ports and: with outletports; a rotary val-ve imembeiueonneeted to, and; rotating'with the drum and provided With? inner and outer ports: for the measuring-chambers on; opposite sides of the 'diaph'ragrns respectively,

there beingan inlet. port andan outlet port .on opposite sides of the produee'daxis oft-he drum. between the oppositely-arrangedeutofis between'the sets" of inlet and-outlet ports, so that; at the rotati'on of the drum epp e v-a r ged"set tr: inletand outlet. ports mayb 01ft ofi while two; other set s of inletand outlet ports will be opened.

therebyal-l'owing inflationof two measuring ehambers and ldeflation of two other m' e'iasu r-v ing chambers to occur while the intermediate setsfofinner and 'outer chambers are cut off. 'f

'19; Ina gasmet er a drumcomprising a portecthubfmember havinga central aa'iis, diametrically opposite pans fasteuedtto said hub member and provided with ports coin; municating gwith 'ports of the hub, diaphi agms fastened-to the rims'oii. said; pans. outer pans applied to saiddiaphragms" and fastene'dto the rimsof the inner pans and 15, A gas meter compris ng a drum proouter pan on one side with an outletaifd; inner pan onthegother side wlth an outlet so V that two pans may be deflated at the same inlet and" to connect the complementary time that two other pansf'a're being inflated. QO A gas meter provided with 'a ported measuring pan a diaphragm operable in saidnieasuri npj pan todeflatethe-slame; and

anadjustable; stop for said' diaphragmto regulate the deflating act-ion thereofa' 21. The combination with anunmeasured gas chamber andmeansto supply gasthere; to; OfjOHtlQl? means for said unmeasured gas chamber; agasjmeter drumhaving'measiir;

ing chambers and provided with diaphragm membr anees; meansfor the lnfiation anddeflation of the measuring chamber; an "oil 1 30' chamber; and Wick means leading from the oil chamber to said outlet means therefrom, to conduct a limited supply of lubricating oil into the course of the onflowing gas for the purpose of lubricating the diaphragm membranes.

22. A meter provided with a rotary drum having independently acting, circumferentiallydisposed Weighted diaphragms, the rotation of the drum being controlled by the shifting of said Weighted diaphragms, the

Copies of this patent may be obtained for drum having pans on opposite sides of each diaphragm, and means to admit and emit gas from the pans in response to the rotation of the drum.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 23d day of May, 1916.

ELIAS B. LA MATYR. 7

Witness:

JAMES R. Townsmx'n.

five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

